860021616 has 20 divisors (see below), whose sum is σ = 2221722632. Its totient is φ = 286673856.

The previous prime is 860021611. The next prime is 860021639. The reversal of 860021616 is 616120068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860021611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8958511 + ... + 8958606.

Almost surely, 2^860021616 is an apocalyptic number.

It is an amenable number.

860021616 is an abundant number, since it is smaller than the sum of its proper divisors (1361701016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

860021616 is a wasteful number, since it uses less digits than its factorization.

860021616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17917128 (or 17917122 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 860021616 is about 29326.1251446556. The cubic root of 860021616 is about 950.9765087336.

The spelling of 860021616 in words is "eight hundred sixty million, twenty-one thousand, six hundred sixteen".